Asymmetric Sulfur Vacancy-Engineered Cu–Co 9 S 8 Nanozyme: A High-Performance Signal Label for Chemiluminescence Immunoassay

nanowires. The assay achieved a detection limit of 0.32 ng/mL. This work not only presents a highly active CL catalyst but also offers a simple and effective strategy for enhancing the catalytic performance of metal sulfides through rational vacancy engineering.